Northern Prairie Wildlife Research Center
TABLE 5. Mean density (no./ha) ± SE of the six most commonly observed bird species by vegetation type in Saginaw Bay wetlands, 19941995.  
Sedge Wren  
1994  1995  Marsh Wren^{b} 
Yellow Warbler  Common Yellowthroat^{b} 
Swamp Sparrow^{b} 
Redwinged Blackbird  
Vegetation type^{a}  Period 2^{b}  Period 3^{b}  Period 2^{b}  Period 3^{b}  Period 2^{b}  Period 3^{b}  Period 2^{b}  Period 3^{b}  
SS  0 C  0 C  0 B 
0 B 
0 C 
9.3 ± 1.0 A 
14.7 ± 1.0 A 
2.7 ± 0.6 B^{e} 
11.3 ± 1.8 C 
17.3 ± 1.8 A 
6.0 ± 1.8 A^{g} 

WM/SS  6.7 ± 1.6 B  3.0 ± 1.6 BC  0 B 
10.0 ± 1.9 A 
0 C 
3.3 ± 1.3 B 
2.0 ± 1.2 B 
5.3 ± 0.8 A 
21.5 ± 2.3 B 
0 C 
0 B 

WM/SS/LS  10.0 ± 1.9 AB  0 C  6.7 ± 2.2 A^{d} 
3.3 ± 2.2 B 
0 C 
2.8 ± 1.4 B 
1.7 ± 1.6 B 
1.5 ± 1.0 BC 
27.8 ± 2.8 B 
7.1 ± 2.7 B^{f} 
1.7 ± 2.9 AB 

WM/LS  0 C  6.7 ± 2.2 B^{c}  0 B 
0 B 
0 C 
0 B 
0 B 
0 C 
44.2 ± 2.9 A 
0 C 
0 B 

WM  13.3 ± 2.2 A  13.3 ± 1.6 A  3.3 ± 1.6 AB 
3.3 ± 1.6 B 
0.5 ± 1.9 C 
0 B 
0 B 
1.4 ± 0.8 BC 
21.2 ± 2.2 B 
6.7 ± 2.4 B^{f} 
4.2 ± 2.0 AB 

IC  0 C  0 C  0 B 
0 B 
15.6 ± 1.8 B 
0.7 ± 1.0 B 
0 B 
0 C 
9.6 ± 2.1 C 
5.7 ± 1.9 BC 
4.4 ± 2.4 AB 

CC  0 C  0 C  0 B 
0 B 
20.6 ± 1.2 A 
0 B 
0 B 
0.2 ± 0.5 C 
1.5 ± 1.4 D 
1.8 ± 1.4 BC 
1.2 ± 1.4 B 

CB  0 C  0 C  0 B  0 B  0.5 ± 2.0 C  0 B  0 B  0 C  0 D  0 C  0 B  
^{a} Vegetation
types: SS = scrubshrub, WM/SS = wet meadow/scrubshrub, WM/SS/LS = wet
meadow/scrubshrub/loosestrife, WM/LS = wet meadow/loosestrife, WM = wet
meadow, IC = inland cattail, CC = coastal cattail, CB = coastal bulrush. ^{b} Means within columns followed by the same letter do not differ (P > 0.05) as determined by ANOVA and Fisher's least significant difference. ^{c} Fisher's least significant difference multiple comparisons were not corroborated by 90% confidence interval comparisons with WM/SS/LS and IC (see METHODS). ^{d} Fisher's least significant difference multiple comparisons were not corroborated by 90% confidence interval comparisons with WM/SS and WM/LS (see METHODS). ^{e} Fisher's least significant difference multiple comparisons were not corroborated by 90% confidence interval comparisons with WM/LS (see METHODS). ^{f} Fisher's least significant difference multiple comparisons were not corroborated by 90% confidence interval comparisons with WM/SS, WM/LS, and CB (see METHODS). ^{g} Fisher's least significant difference multiple comparisons were not corroborated by 90% confidence interval comparisons with WM/SS, WM/LS, and CB (see METHODS). 